FISH PASS FOR DAM, FISH FEEDER FOR GOING-DOWN STREAM OF RIVER, AND INTEGRAL FISH PASS SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a compact fish pass suitable for a high dam having large water-level difference. ;SOLUTION: Fishes are made to go upstream in order of a low waterway 12 → a low water-level chamber 15 → a vertical pipe 18B → a horizontal pipe 21B → an intermediate-stage pond 102 → an inclined waterway 103 → an upper- stage pond 101 → an upper-stage pond drain pipe 104 → a dam lake 13. Fishes can be made to go downstream in order of the dam lake 13 → a fish feeder 80 for going-downstream of the river → the upper-stage pond 101 → the inclined waterway 103 → the intermediate pond 102 → an intermediate-pond drain pipe 105 → a low waterway 12 in the integral fish-feed system. Thus, the integral fish-feed system is compacted along a bank body 11, and is suitable for a high dam because the going-upstream and going-downstream of fishes can be executed.;COPYRIGHT: (C)2001,JPO